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- # Copyright (c) Microsoft Corporation.
- # SPDX-License-Identifier: Apache-2.0
- # DeepSpeed Team
- import importlib
- import inspect
- from .abstract_accelerator import DeepSpeedAccelerator
- # During setup stage torch may not be installed, pass on no torch will
- # allow op builder related API to be executed.
- try:
- import torch.npu
- except ImportError:
- pass
- class NPU_Accelerator(DeepSpeedAccelerator):
- def __init__(self):
- super().__init__()
- self._name = 'npu'
- self._communication_backend_name = 'hccl'
- self._compile_backend = "inductor"
- # dict that holds class name <--> class type mapping i.e.
- # 'AsyncIOBuilder': <class 'op_builder.async_io.AsyncIOBuilder'>
- # this dict will be filled at init stage
- self.class_dict = None
- def is_synchronized_device(self):
- return False
- def use_host_timers(self):
- return self.is_synchronized_device()
- def resolves_data_dependency(self):
- return self.is_synchronized_device()
- def handles_memory_backpressure(self):
- return self.is_synchronized_device()
- # Device APIs
- def device_name(self, device_index=None):
- if device_index is None:
- return 'npu'
- return 'npu:{}'.format(device_index)
- def device(self, device_index=None):
- return torch.npu.device(device_index)
- def set_device(self, device_index):
- torch.npu.set_device(device_index)
- def current_device(self):
- return torch.npu.current_device()
- def current_device_name(self):
- return 'npu:{}'.format(torch.npu.current_device())
- def device_count(self):
- return torch.npu.device_count()
- def synchronize(self, device_index=None):
- return torch.npu.synchronize(device_index)
- # RNG APIs
- def random(self):
- return torch.random
- def set_rng_state(self, new_state, device_index=None):
- if device_index is None:
- return torch.npu.set_rng_state(new_state)
- return torch.npu.set_rng_state(new_state, device_index)
- def get_rng_state(self, device_index=None):
- if device_index is None:
- return torch.npu.get_rng_state()
- return torch.npu.get_rng_state(device_index)
- def manual_seed(self, seed):
- return torch.npu.manual_seed(seed)
- def manual_seed_all(self, seed):
- return torch.npu.manual_seed_all(seed)
- def initial_seed(self):
- return torch.npu.initial_seed()
- def default_generator(self, device_index):
- return torch.npu.default_generators[device_index]
- # Streams/Events
- @property
- def Stream(self):
- return torch.npu.Stream
- def stream(self, stream):
- return torch.npu.stream(stream)
- def current_stream(self, device_index=None):
- return torch.npu.current_stream(device_index)
- def default_stream(self, device_index=None):
- return torch.npu.default_stream(device_index)
- @property
- def Event(self):
- return torch.npu.Event
- # Memory management
- def empty_cache(self):
- return torch.npu.empty_cache()
- def memory_allocated(self, device_index=None):
- return torch.npu.memory_allocated(device_index)
- def max_memory_allocated(self, device_index=None):
- return torch.npu.max_memory_allocated(device_index)
- def reset_max_memory_allocated(self, device_index=None):
- return torch.npu.reset_max_memory_allocated(device_index)
- def memory_cached(self, device_index=None):
- return torch.npu.memory_cached(device_index)
- def max_memory_cached(self, device_index=None):
- return torch.npu.max_memory_cached(device_index)
- def reset_max_memory_cached(self, device_index=None):
- return torch.npu.reset_max_memory_cached(device_index)
- def memory_stats(self, device_index=None):
- if hasattr(torch.npu, 'memory_stats'):
- return torch.npu.memory_stats(device_index)
- def reset_peak_memory_stats(self, device_index=None):
- if hasattr(torch.npu, 'reset_peak_memory_stats'):
- return torch.npu.reset_peak_memory_stats(device_index)
- def memory_reserved(self, device_index=None):
- if hasattr(torch.npu, 'memory_reserved'):
- return torch.npu.memory_reserved(device_index)
- def max_memory_reserved(self, device_index=None):
- if hasattr(torch.npu, 'max_memory_reserved'):
- return torch.npu.max_memory_reserved(device_index)
- def total_memory(self, device_index=None):
- return torch.npu.get_device_properties(device_index).total_memory
- def available_memory(self, device_index=None):
- return self.total_memory(device_index) - self.memory_allocated(device_index)
- # Data types
- def is_bf16_supported(self):
- return torch.npu.is_bf16_supported()
- def is_fp16_supported(self):
- return True
- def supported_dtypes(self):
- return [torch.float, torch.half, torch.bfloat16]
- # Misc
- def amp(self):
- if hasattr(torch.npu, 'amp'):
- return torch.npu.amp
- return None
- def is_available(self):
- return torch.npu.is_available()
- def range_push(self, msg):
- return
- def range_pop(self):
- return
- def lazy_call(self, callback):
- return torch.npu._lazy_call(callback)
- def communication_backend_name(self):
- return self._communication_backend_name
- def is_triton_supported(self):
- return False
- # Graph operations
- def create_graph(self):
- return None
- def capture_to_graph(self, graph, pool=None, stream=None):
- from deepspeed.runtime.utils import noop_context
- return noop_context()
- def replay_graph(self, graph):
- return
- # Tensor operations
- @property
- def BFloat16Tensor(self):
- return torch.npu.BFloat16Tensor
- @property
- def ByteTensor(self):
- return torch.npu.ByteTensor
- @property
- def DoubleTensor(self):
- return torch.npu.DoubleTensor
- @property
- def FloatTensor(self):
- return torch.npu.FloatTensor
- @property
- def HalfTensor(self):
- return torch.npu.HalfTensor
- @property
- def IntTensor(self):
- return torch.npu.IntTensor
- @property
- def LongTensor(self):
- return torch.npu.LongTensor
- def pin_memory(self, tensor, align_bytes=1):
- return tensor.pin_memory()
- def is_pinned(self, tensor):
- return tensor.is_pinned()
- def on_accelerator(self, tensor):
- device_str = str(tensor.device)
- if device_str.startswith('npu:'):
- return True
- else:
- return False
- def op_builder_dir(self):
- try:
- # is op_builder from deepspeed or a 3p version? this should only succeed if it's deepspeed
- # if successful this also means we're doing a local install and not JIT compile path
- from op_builder import __deepspeed__ # noqa: F401 # type: ignore
- return "op_builder.npu"
- except ImportError:
- return "deepspeed.ops.op_builder.npu"
- def _lazy_init_class_dict(self):
- if self.class_dict:
- return
- op_builder_module = importlib.import_module(self.op_builder_dir())
- # get op builder class from op_builder/npu/__init__.py
- self.class_dict = {}
- for class_name, class_obj in inspect.getmembers(op_builder_module, inspect.isclass):
- self.class_dict[class_name] = class_obj
- # create an instance of op builder and return, name specified by class_name
- def create_op_builder(self, class_name):
- builder_class = self.get_op_builder(class_name)
- return None if builder_class is None else builder_class()
- # return an op builder class, name specified by class_name
- def get_op_builder(self, class_name):
- self._lazy_init_class_dict()
- if class_name in self.class_dict:
- return self.class_dict[class_name]
- else:
- return self.class_dict['NotImplementedBuilder'] if 'NotImplementedBuilder' in self.class_dict else None
- def build_extension(self):
- from torch.utils.cpp_extension import BuildExtension
- return BuildExtension
- def export_envs(self):
- return ['ASCEND', 'HCCL', 'LD_LIBRARY', 'PATH']
- def visible_devices_envs(self):
- return ['ASCEND_RT_VISIBLE_DEVICES']
- def set_visible_devices_envs(self, current_env, local_accelerator_ids):
- for env in self.visible_devices_envs():
- current_env[env] = ",".join(map(str, local_accelerator_ids))
- def get_compile_backend(self):
- return self._compile_backend
- def set_compile_backend(self, backend):
- supported_backends = torch._dynamo.list_backends(exclude_tags=())
- if backend in supported_backends:
- self._compile_backend = backend
- else:
- raise ValueError(
- f"{backend} not supported by {self.device_name()}. Supported Backends are {supported_backends }")
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